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  • Title: Genetic polymorphism and isoenzyme patterns of lactate dehydrogenase in tench (Tinca tinca), crucian carp (Carassius carassius) and carp (Cyprinus carpio).
    Author: Valenta M, Slechta V, Slechtová V, Kálal L.
    Journal: Anim Blood Groups Biochem Genet; 1977; 8(4):217-30. PubMed ID: 567944.
    Abstract:
    Isoenzyme patterns and the polymorphism of lactate dehydrogenase (LDH) were investigated in 3 fish species of family Cyprinidae, i.e. tench (Tinca tinca), crucian carp (Carassius carassius) and carp (Cyprinus carpio). The isoenzyme patterns were tissue and species specific. In crucian carp subunits with different electrophoretic mobility are present, which are genetically controlled from the B1, B2, A1, A2 and C loci, while the set of loci in carp is B1, B2, A, C1 and C2 and in tench B, A, C. The locus B of LDH in tench, the locus B2 in crucian carp, and the loci B1, C1 and C2 in carp are polymorphic and have two different alleles in each case. The polymorphism did not affect the total LDH activity in the tissues. All the populations investigated were in Hardy-Weinberg equilibrium. The genetic control of the polymorphism in B1 and C1 loci in carp was proved by test matings. The polymorphism in B loci tested in erythrocytes may be utilized as genetic markers in the fish breeding.
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